Hinge foe shutters



UNITED STATES PATENT OFFICE.

ISAAC DAVIS, OF GROTON, NEW YORK.

HINGE FOR SHUTTERS.

Specification of Letters Patent No. 14,349, dated March 4, 1856.

To all whom it may concern:

Be it known that I, IsAAo DAvIs, of Groton, in the county of Tompkinsand State of New York, have invented certain new and useful.Improvements in Hinges for Shutters, Blinds, &c.; and I do herebydeclare that the same are described and represented in the followingspecification and drawings.

To enable o-thers skilled in the art to make and use my improvements Iwill proceed to describe their construction and operation referring tothe drawings in which the same letters indicate like parts in each ofthe ligures.

Figure 1 is atop view of the hinge with a section of the window frameand a portion of a blind. Fig. 2 is an elevation of the hinge upon theframe and blind.

The nature of my invention consists vin making a score longitudinally inthe hole in the hinge in which the pin is inserted that connects themovable part, to the stationary part of the hinge; the score in themovable part being made so as to correspond with the score in thestationary part, when the blind which is hung with the hinge is half wayopen; so that a pin with a rib or feather on that part of it whichcorresponds with the middle or lower section o-f the hinge fitted to thescore, can be inserted to fasten the hinge together, or removed so thatit can be separated, but if the movable part of the hinge is changed orturned either way, after the pin is inserted, it prevents the pin frombeing removed until it, the movable part, is brought into the sameposition again. in which the pin was inserted. Also in a segment on themovable part of the hinge provided with teeth of a peculiarconstruction, adapted to a. conical screw arranged in rear of a radialline from the center of the pin of the hinge.

In the accompanying drawings A is the stationary part of the hingefastened to the window frame B. This part of the hinge is made in twopieces as shown by the line c, each part being provided with asemicircular score for the journal of the conical screw shaft D, andwith a projection E, for the pin F, on which the movable part of thehinge G, turns as the blind H, to which it is fastened, is opened andshut. The holes for the pin F in the projections E, E, and the hole inthe movable part of the hinge G, are provided with angular scores a, in

the stationary part and in the movable part represented by dotted linesso arranged that when the blind is half way open the scores in theseveral parts will correspond, so that the pin F, Fig. 3, which isprovided with a rib or feather c, on that part which comes in the partsE, E, fitted to the score a., can be inserted' so that the movable partG, will turn on the middle portion d, of the pin F where there is nofeather. This mode of construction prevents the removal 'of the pin F,when the blind is closed, so

as to remove the blind, so that the hinge is proof or secure againstburglars and at the same time permits the pin F, to be removed withfacility when the shutter is half way open. the portion d, of the pinand omitted on the other portions, it would answer the same purpose;when two projections E, E, are used; but if only one is used the feathershould be on that part of the pin which is in the lower portion of thehinge.

The moving part G, of the hinge is made circular and provided with twoflanges J, J, by which it is fastened to the blind or shutter, and thecircular part is provided with teeth on a large portion of its edge madein the peculiar form shown in the drawing, so as to correspond with thethread of the conical screw 7c, which works into them, so as to open andclose the blind by turning the screw which is provided with a shaft D,which has a square end fitted into the socket L, of the crank M, on theinside of the window frame, so that any person on the inside of thehouse can open and If the rib or feather was made onl close the blindsor place them in the posiv tion desired, without leaving the room oropening the window, and the conical screw will hold them in the positionin which they are placed without further fastening.

The socket L, is provided with a flange N and is fitted to turn in theplate P, which is fastened to the window frame on the inside, so as tohold the socket and crank in a proper position to be turned, to operatethe blind H. By making the screw 7c, conical and the teeth on G, in theform shown I am enabled to place the screw within the plane of theoutside surface 'of the window frame, or behind the radial line e drawnfrom the center of the pin at a right angle to the shaft D, of thescrew, so that the screw is entirely inclosed and protected from theweather.

Screws and gears as commonly constructed Will not Work Well together ifat all, unless the screw shaft is placed so that a radial line from thecenter of the gear at a right angle to the screw shaft bisects thescrew; and when constructed in that manner the screw has to be placedoutside of the Window frame where it is exposed, and is liable to becovered with ice so that if an attempt Was made to operate it, it Wouldbreak or derange the parts. However when so constructed they are coveredby au eX- pensive and unsightly case; and to avoid both of theabovementioned defects I have been induced to make the screvv conical asdescribed and the teeth of the Wheel in the peculiar form shown so thatthey Will oper- ISAAC DAVIS.

Witnesses F. IVILLOUGHBY, C. BROWN.

